SK-II's signature ingredient: PITERA™ PITERA™ is a natural bio-ingredient containing over 50 micro-nutrients like vitamins, minerals, amino acids and organic acids to condition skin’s natural functions. It fights the appearance of uneven skin and dark spots. In addition, it provides anti-oxidant effects by scavenging the surface free radicals that contribute to the appearance of skin aging. PITERA™ also reduces the oily look of skin and makes pores visibly smaller. Our iconic PITERA™ essence for Crystal Clear Skin. With more than 90% PITERA™, SK-II's Facial Treatment Essence is loved by millions for its transformative powers on the skin. It fundamentally revitalizes skin’s appearance making it visibly smooth, firm, radiant and youthful looking—your best skin yet.